8 加法 20 等于多少？

8 + 20 = 28

8加法20 等于 28

竖式演算

8+2028

验算

  • 用减法验算：28 − 20 = 8
  • 用减法验算：28 − 8 = 20

相关题目

8 + 19 = 27 8 + 21 = 29 8 + 22 = 30 8 + 18 = 26 8 + 23 = 31 8 + 17 = 25 8 + 24 = 32 8 + 16 = 24 7 + 20 = 27 9 + 20 = 29 6 + 20 = 26 10 + 20 = 30 11 + 20 = 31 5 + 20 = 25 12 + 20 = 32 4 + 20 = 24 1 + 27 = 28 2 + 26 = 28 3 + 25 = 28 4 + 24 = 28 5 + 23 = 28 6 + 22 = 28 47 + 51 = 98 40 + 33 = 73 8 + 80 = 88 18 + 100 = 118 45 + 10 = 55 100 + 75 = 175 65 - 37 = 28 53 - 25 = 28